However, the Joker is known for his unpredictable and chaotic nature, so it's easy to imagine him using a variety of unconventional and potentially dangerous items in his schemes.
Here are some possible ways the Joker *could* put a bomb in a doll:
* Concealed Mechanism: He might have a small, concealed mechanism within the doll itself, triggered remotely or by a timer.
* Explosives in Clothing: He could place explosives within the doll's clothing, disguised as stuffing or sewn into the seams.
* External Trigger: He could have a separate device that, when triggered, explodes the doll from a distance.
Remember, the Joker's primary goal is to create chaos and torment Batman. Using a seemingly harmless doll to deliver a deadly surprise would certainly be in line with his character.